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# PreferencesFactory

`public interface PreferencesFactory`
``

java.util.prefs.PreferencesFactory

A factory object that generates Preferences objects. Providers of new `Preferences` implementations should provide corresponding `PreferencesFactory` implementations so that the new `Preferences` implementation can be installed in place of the platform-specific default implementation.

This class is for `Preferences` implementers only. Normal users of the `Preferences` facility should have no need to consult this documentation.

See also:

- `Preferences`

## Summary

### Public methods
`abstract Preferences` | `systemRoot()` Returns the system root preference node.
`abstract Preferences` | `userRoot()` Returns the user root preference node corresponding to the calling user.

## Public methods

### systemRoot

    public abstract Preferences systemRoot ()

Returns the system root preference node. (Multiple calls on this method will return the same object reference.)

Returns
`Preferences` | the system root preference node

### userRoot

    public abstract Preferences userRoot ()

Returns the user root preference node corresponding to the calling user. In a server, the returned value will typically depend on some implicit client-context.

Returns
`Preferences` | the user root preference node corresponding to the calling user

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